Analysis and optimisation of IEEE 802.11 wireless local area networks

In the recent years, IEEE 802.11 wireless local area networks (WLANS) have increasingly been deployed in a variety of situations, such as homes, business enterprises, academic campuses, and public places such as airports, hotels, and shopping centers. It has therefore become very important to understand the performance of such networks as well the effective network design, deployment and management. In this paper, our concern is mainly with the analytical performance evaluation of WLANs. We consider the aspect of network optimisation and discuss the saturation throughput analysis of single cell WLANs. We also have shown that the fixed point equation can be established using a renewal reward argument. For the case in which the mean back-off grows multiplicatively with collisions, we establish a sufficient condition for a system to have a unique fixed point.